Click to edit Master title style Dividing Decimals Lessons

Multiplying and Dividing Decimals by 10, 100, and 1,000

Click to edit Master title style Tips: When you multiply by 10, 100, or 1,000, you can move the decimal point to the right. The number of decimal places you move is the same as the number of zeroes you are multiplying by. When you divide by 10, 100, or 1,000, you can move the decimal point to the left. Move the decimal point once for each zero you are dividing by.

Click to edit Master title style x 100 Move the decimal to the right: two spaces

Click to edit Master title style 4.2 ÷ 100 Move the decimal point to the left: two spaces. Add a zero for the second space..042

Click to edit Master title style Remember the parts of a division problem: dividend divisor quotient

Click to edit Master title style Dividing a Decimal by a Whole Number Place the decimal point in the quotient directly above the decimal point in the dividend. Divide as you normally would (DMSCB)

Click to edit Master title styleExample DMSCBDMSCB

Click to edit Master title style You Try!

Click to edit Master title style Dividing a Decimal by a Decimal 1.Move the decimal point in the divisor to the right, until you get to the end of the digits. 2.Count how many places you moved that decimal. 3.Move the decimal point in the dividend the same number of places to the right that you moved the decimal point in the divisor.

Click to edit Master title style Example one space New problem

Click to edit Master title style DMSCBDMSCB

Click to edit Master title style Your Turn! x x x

Click to edit Master title style Example The decimal must be moved 2 spaces to the right. When we move this one 2 spaces, we find that we need to add a space. What will we fill it with? Answer: Fill it in with a becomes 1330 SO, our problem becomes 038 into is the same as 38.

Click to edit Master title style x x x

Click to edit Master title style Terminating and Repeating Decimals A terminating decimal is a decimal that stops, or terminates. Examples: 1.25 or A repeating decimal is a decimal that has a repeating digit or a repeating group of digits. Examples: … or … Repeating decimals usually have a bar across the repeating portion. 2.3

Click to edit Master title style Terminating decimal

Click to edit Master title style This is a repeating decimal..83

Click to edit Master title style TIME FOR HOMEWORK! Classwork: Try this Decimals Cruncher game to practice dividing decimals. Use this interactive Exploring Division of Decimals to understand the relationship between Multiplication and Division of decimals.Decimals CruncherExploring Division of Decimals pg. 45, #2-52 evens